package com.eshop.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;

@Configuration
@EnableSwagger2 //开启swagger
public class SwaggerConfig {
    //配置了swagger的Docket的bean实例
    //.enable()：是否启用swagger,flase则不能在浏览器中访问
    @Bean
    public Docket docket(){
        return new Docket(DocumentationType.SWAGGER_2)
                .useDefaultResponseMessages(false)
                .apiInfo(apiInfo())
                .select()
                //配置要扫描接口的方式:
                //basePackage():指定要扫描的包
                //any():扫描全部
                //none():不扫描,
                //withClassAnnotation():扫描类上的注解(RestController.class)
                //withMethodAnnotation():扫描方法上的注解(GetMapping.class)
                .apis(RequestHandlerSelectors.basePackage("com.eshop.controller"))
                .paths(PathSelectors.any())
                //path():过滤什么路径
                .build()
                .securityContexts(securityContexts())
                .securitySchemes(securitySchemes());
    }
    private ApiInfo apiInfo(){
        return new ApiInfoBuilder()
                .title("eshop接口文档")
                .description("eshop接口文档")
                .contact(new Contact("YongRui Gu", "http:localhost:8080/swagger-ui.html", "xxxxx@xxx.com"))
                .version("1.0")
                .build();
    }

    private List<ApiKey> securitySchemes(){
        //设置请求头信息
        List<ApiKey> result= new ArrayList<>();
        ApiKey apiKey = new ApiKey("Authorization","Authorization","Header");
        result.add(apiKey);
        return result;
    }

    private List<SecurityContext> securityContexts(){
        //设置需要登录认证的路径
        List<SecurityContext> result = new ArrayList<>();
//        result.add(getContextByPath("/hello"));
        result.add(
//                getContextByPath("/system/cfg/menu");
                SecurityContext.builder()
                        .securityReferences(defaultAuth())
                        .forPaths(PathSelectors.regex("^(?!auth).*$"))
                        .build());
        return result;

    }

    private SecurityContext getContextByPath(String pathRegex) {
        return SecurityContext.builder()
                .securityReferences(defaultAuth())
                .forPaths(PathSelectors.regex(pathRegex))
                .build();
    }

    private List<SecurityReference> defaultAuth() {
        List<SecurityReference> result = new ArrayList<>();
        AuthorizationScope authorizationScope = new AuthorizationScope("global","accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        result.add(new SecurityReference("Authorization",authorizationScopes));
        return result;
    }

}
